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2025-11-14 - 10:37
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack6slot0.osadl.org (updated Fri Nov 14, 2025 01:00:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3609699413409,2cyclictest0-21swapper/3522:15:5829
3609699413409,2cyclictest0-21swapper/3522:15:5829
3607699311282,14cyclictest36795-21nfsd19:15:2010
3607699311282,14cyclictest36795-21nfsd19:15:2010
3609799278239,18cyclictest0-21swapper/3623:40:2330
3609799278239,18cyclictest0-21swapper/3623:40:2230
3609799278239,18cyclictest0-21swapper/3623:40:2230
3609699277258,4cyclictest14560-21NetworkChangeNo21:45:1929
3609699277258,4cyclictest14560-21NetworkChangeNo21:45:1929
3609699265232,15cyclictest0-21swapper/3521:05:1929
3609699265232,15cyclictest0-21swapper/3521:05:1929
3605499250149,74cyclictest16303-21NetworkChangeNo22:50:221
3605499250149,74cyclictest16303-21NetworkChangeNo22:50:221
3609699247207,21cyclictest0-21swapper/3522:20:1929
3609699247207,21cyclictest0-21swapper/3522:20:1929
3609799246213,18cyclictest0-21swapper/3623:20:2030
3609799246213,18cyclictest0-21swapper/3623:20:2030
3609799246213,18cyclictest0-21swapper/3623:20:2030
3609699240216,16cyclictest34230-21NetworkChangeNo22:30:2029
3609699240216,16cyclictest34230-21NetworkChangeNo22:30:2029
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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